Arthur, acquired in a draft-night trade on June 27 last year, averaged 5.9 points and 3.1 rebounds in 68 games with Denver last season. He also made a career-high 24 3-pointers — 19 more than his previous four seasons combined.

In 315 career games with Denver and Memphis, Arthur is averaging 6.5 points and 3.7 rebounds.

Robinson, signed as a free agent last July 26, averaged 10.4 points and 2.5 assists in 44 games with Denver before suffering a season-ending knee injury on Jan. 29.